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South Dakota State University

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Response By Native Feedlot Lambs To Injectable Tramisol, L. B. Embry, W. S. Swan Jan 1975

Response By Native Feedlot Lambs To Injectable Tramisol, L. B. Embry, W. S. Swan

South Dakota Sheep Field Day Research Reports, 1975

The objective of this experiment was to further test Tramisol with feedlot lambs. Observations ere made as to the apparent initial reaction of the lambs to the injection evidence of swelling at site of injection and evidence of tissue damage at time of slaughter.

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Induction Of Parturition In Beef Cattle With Dexamethasone, D. G. Levis, A. L. Slyter, S. Cotton Jan 1975

Induction Of Parturition In Beef Cattle With Dexamethasone, D. G. Levis, A. L. Slyter, S. Cotton

South Dakota Cow-Calf Field Day Proceedings, 1975

In recent years many reports have shown that synthetic glucocorticoids such as dexamethasone (DXMS) and flumethasone will induce parturition in cattle when injected intramuscularly during various stages of gestation.
A study was conducted at South Dakota State University to determine, under field conditions, the effectiveness of DXMS coupled with estradiol on the precision of parturition induction, the incidence of retained placentas and subsequent reproductive performance of beef cows.

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Effects Of Nutrition On Reproduction And Productivity Of Replacement Heifers, G. H. Deutscher Jan 1975

Effects Of Nutrition On Reproduction And Productivity Of Replacement Heifers, G. H. Deutscher

South Dakota Cow-Calf Field Day Proceedings, 1975

Greater emphasis on production efficiency has stimulated ranchers to look for methods of increasing the production of their herds without increasing cow numbers. Proper development of replacement heifers may be one of the best management practices for improving efficiency of a beef operation. Heifer calves which reach puberty early and conceive early in the breeding season will calve early the following year. They should produce a heavy calf at weaning and should rebreed early with the next calf. If this sequence continues each year, lifetime productivity should reach maximum level. Therefore, efficiency of production in a herd could be improved …

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Recent Research Reuslts In Breed Evaluation, D. A. Marshall, C. A. Dinkel Jan 1975

Recent Research Reuslts In Breed Evaluation, D. A. Marshall, C. A. Dinkel

South Dakota Cow-Calf Field Day Proceedings, 1975

Crossbreeding offers beef producers opportunities to utilize heterosis in lowly heritable traits and to utilize the benefits of selection in highly heritable traits. Selection benefits can be gained through selection of individual breeding animals on their own performance as well as through selection of breeds to be used in the crossbreeding system on the basis of their highly heritable strong points. Dearborn (1969) summarized available research information for breed comparisons up to that time and his table and references are included in the appendix. The purpose of this paper is to update that report and present results of published experiments …

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Evaluation Of Cow-Calf Efficiency To Weaning, D. A. Marshall, W. R. Parker, C. A. Dinkel Jan 1975

Evaluation Of Cow-Calf Efficiency To Weaning, D. A. Marshall, W. R. Parker, C. A. Dinkel

South Dakota Cow-Calf Field Day Proceedings, 1975

There has been a great deal of interest in recent years in the relationship between cow size and efficiency. Researchers have determined that maintenance feed requirements are greater for large cows. This finding has furthered the belief that efficiency through weaning is highly dependent upon cow size. It must be pointed out, however, that other studies have generally shown heavier cows produce heavier calves at weaning. It is the purpose of this report to examine feed requirements to produce a unit of weaning weight with regard to size and breed of cows.

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Management Systems For Finishing Range Lambs, A. L. Slyer, W. R. Trevillyan Jan 1975

Management Systems For Finishing Range Lambs, A. L. Slyer, W. R. Trevillyan

South Dakota Sheep Field Day Research Reports, 1975

Increased pressure for native range pasture has prompted investigation of alternative management systems for finishing range lambs. Early weaning coupled with alternative finishing systems offers several advantages to the range sheep operator. Increased base ewe flock numbers and/or less grazing pressure, better range management, less carcass damage from needles, better feed efficiency of the younger lamb in the drylot and lower predator losses are some advantages that can be listed for early weaning.
A study was initiated in 1971 at the Antelope Range Field Station to study alternative management systems for range lamb production.

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Controlled Parturition In The Ewe, E. L. Harman, A. L. Slyter Jan 1975

Controlled Parturition In The Ewe, E. L. Harman, A. L. Slyter

South Dakota Sheep Field Day Research Reports, 1975

The ability to control the time of parturition offers the sheep producer a valuable management tool to increase the efficiency of his operation. In small flocks controlled parturition could be used for the entire flock. In larger flocks controlled parturition could be used effectively as a clean-up tool by inducing parturition in all ewes lambing by 141 days after removal of rams from the breeding flock. Advantages which the producer might obtain from controlled lambing include more efficient utilization of available space and labor, less death loss due to increased supervision and more uniform lamb crops.

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Marketing Lambs At Heavier Weights, Dan H. Gee, A. L. Slyter Jan 1975

Marketing Lambs At Heavier Weights, Dan H. Gee, A. L. Slyter

South Dakota Sheep Field Day Research Reports, 1975

Marketing lambs at heavier weights may offer some advantages to the sheep industry. The factors favoring production of a heavier weight market lamb are:
1. Decreased slaughter cost per unit of carcass weight. Slaughter costs are about the same for a 100 lb. or a 140 lb. lamb.
2. A lamb chop with a larger loin eye area may have a wider variety of uses.
3. Help alleviate the seasonality of lamb marketing. With a longer feeding period and the use of a variety of management techniques, lamb marketing could be more uniformly distributed throughout the year.

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The Use Of Bentonite As A Feeding Aid For Ruminants, R. J. Emerick, G. B. Huntington, L. B. Embry Jan 1975

The Use Of Bentonite As A Feeding Aid For Ruminants, R. J. Emerick, G. B. Huntington, L. B. Embry

South Dakota Sheep Field Day Research Reports, 1975

The beneficial as well as the potential detrimental effects of bentonite upon feedlot performance during as initial period and subsequent intervals of a lamb finishing period were studied in experiment 1. The effects of bentonite upon digestion and retention of various nutrients were studied in experiment 2. These studies are described herein.

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Computer Simulation Model Of The Immune Response Of Mice To Western Equine Encephalitis (Wee) Computer Simulation Model Of The Immune Response Of Mice To Western Equine Encephalitis (Wee) Virusirus, Gilbert Chi Kuna Ho Jan 1975

Computer Simulation Model Of The Immune Response Of Mice To Western Equine Encephalitis (Wee) Computer Simulation Model Of The Immune Response Of Mice To Western Equine Encephalitis (Wee) Virusirus, Gilbert Chi Kuna Ho

Electronic Theses and Dissertations

The lymphatic system of an animal is optimally developed to protect the body from antigenic invasion. The epithelial and subepithelial compartments of the body are provided with a vast number of wandering cells and a network of centralized lymphorecticular tissues. All of these are capable of reacting to intruding foreign antigens. Upon antigentic challenge, immunocompetent cells (ICC) or antigen specific lymphocytes are activated; this leads either to cell mediated and/or humoral antibody immune responses. The subsequent effect is an accumulation of the responding cells, both by local proliferation and recruitment from the circulation. Through the interaction of both cellular and …

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Overview Of The 1975 Agricultural Outlook, Robert J. Antonides Dec 1974

Overview Of The 1975 Agricultural Outlook, Robert J. Antonides

Economics Commentator (1972- 2016)

No abstract provided.

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South Dakota State University Graduation Exercises, December 14, 1974, Brookings, South Dakota, South Dakota State University Dec 1974

South Dakota State University Graduation Exercises, December 14, 1974, Brookings, South Dakota, South Dakota State University

Commencement Programs

Please be advised that the individuals listed in the program do not officially confirm meeting the graduation requirements. Honorary marshals for the Fall 1974 graduation exercises are Douglas Chittick, Professor Emeritus of Rural Sociology, and Henry DeLong, Professor Emeritus of Agricultural Engineering. Robert H. DeZonia, Commissioner of Higher Education, will deliver the commencement address. President Hilton M. Briggs will confer degrees and present diplomas. Col. Lewis D. Overstreet and Col. Rollin K. Preston, will recognize Army and Air Force officer commissions.

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Sdsu Collegian, December 11, 1974, Student Association Of South Dakota State University Dec 1974

Sdsu Collegian, December 11, 1974, Student Association Of South Dakota State University

The Collegian Archive : 1970 to 1979

Vol. 83, No. 15

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Southeast South Dakota Experiment Farm Annual Progress Report, 1974, Agricultural Experiment Station Dec 1974

Southeast South Dakota Experiment Farm Annual Progress Report, 1974, Agricultural Experiment Station

Agricultural Experiment Station and Research Farm Annual Reports

This fourteenth annual report of the research program at the Southeast South Dakota Experiment Farm has special significance for those engaged in agriculture and the agriculturally related businesses in the nine county area of southeast South Dakota. Reports in this document include information on: temperatures and precipitation data, corn breeding and performance, soybean research and planting, crop rotation.

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Cattle Situation - 1974 And 1975, Wallace G. Aanderud Nov 1974

Cattle Situation - 1974 And 1975, Wallace G. Aanderud

Economics Commentator (1972- 2016)

No abstract provided.

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Sdsu Collegian, November 27, 1974, Student Association Of South Dakota State University Nov 1974

Sdsu Collegian, November 27, 1974, Student Association Of South Dakota State University

The Collegian Archive : 1970 to 1979

Vol. 83, No. 14

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High Protein Oats As A Replacement For Corn In Growing-Finishing Swine Diets, Richard W. Wahlstrom, George W. Libal, Steve L. Robbins Nov 1974

High Protein Oats As A Replacement For Corn In Growing-Finishing Swine Diets, Richard W. Wahlstrom, George W. Libal, Steve L. Robbins

South Dakota Swine Field Day Proceedings and Research Reports, 1974

The objectives of this experiment were to evaluate the protein quality of Dal oats and to determine the feeding value of this oats when used to replace different levels of corn in diets for growing-finishing swine.

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U.S.D.A. Grades For Pork Carcasses, Animal Science Department Nov 1974

U.S.D.A. Grades For Pork Carcasses, Animal Science Department

South Dakota Swine Field Day Proceedings and Research Reports, 1974

There are substantial value differences between pork carcasses. The U.S.D.A. official grade standards for pork carcasses, revised in 1968, are an excellent means for identifying these value differences.

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The Effects Of Gestation Metabolize Energy Levels On Sow Productivity, George W. Libal, Richard W. Wahlstrom Nov 1974

The Effects Of Gestation Metabolize Energy Levels On Sow Productivity, George W. Libal, Richard W. Wahlstrom

South Dakota Swine Field Day Proceedings and Research Reports, 1974

Restricting the amount of energy a pregnant sow consumes during gestation has been accepted as a very desirable management practice. One benefit of limiting energy is increased litter size at birth because of more fertilized eggs being implanted, less early embryonic death loss and less stillbirths at parturition. Another benefit, particularly at a time of extremely high feed cots, is the economic advantage of less feed consumed during gestation when energy is restricted. At the present time the National Research Council (NRC) recommends 6340 Kcal of metabolize energy (ME) daily for the gestating sow. The study reported herein was conducted …

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The Effect Of Size And Type Of Slat Upon The Performance Of Growing-Finishing Pigs, George W. Libal, Richard W. Wahlstrom, Steve L. Robbins Nov 1974

The Effect Of Size And Type Of Slat Upon The Performance Of Growing-Finishing Pigs, George W. Libal, Richard W. Wahlstrom, Steve L. Robbins

South Dakota Swine Field Day Proceedings and Research Reports, 1974

On approximately December 1, 1973, the first group of pigs was put on test in the new confinement finishing barn at the SDSU swine research unit. The barn consists of 24 pens with space for 8 pigs per pen or a total of 192 head of pigs. Three different slat types and sizes are included in the building which allow a comparison of pig performance as related to floor type. Ten of the pens have concrete slats 5 inches side, 10 of the pens have concrete slats 8 inches wide and 4 of the pens have 3 1/2 inch aluminum …

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The Effects Of Feed Additives In Swine Diets, Richard C. Wahlstrom, George W. Libal, Alan Vogel Nov 1974

The Effects Of Feed Additives In Swine Diets, Richard C. Wahlstrom, George W. Libal, Alan Vogel

South Dakota Swine Field Day Proceedings and Research Reports, 1974

This experiment was conducted exactly as the previous one to obtain further data on the effectiveness of feed additives fed for a 5-week period, the effect of withdrawal of feed additives after 5 weeks on future performance and the effect of the antibiotic tylosin when fed during the finishing period.

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Effect Of Level Of Feeding During Lactation On Sow And Pig Performance, George W. Libal, Richard C. Wahlstrom Nov 1974

Effect Of Level Of Feeding During Lactation On Sow And Pig Performance, George W. Libal, Richard C. Wahlstrom

South Dakota Swine Field Day Proceedings and Research Reports, 1974

The requirements of the lactating sow for dietary energy are dependent on the level of body reserves at farrowing time and the amount and composition of milk produced. It has been reported that voluntary feed consumption and weight change during lactation are influenced by level of feeding and weight gain during gestation. Recent research has indicated that energy utilization during the reproductive cycle is more efficient with a feeding system allowing only moderate gains in gestation and an increased feeding level during lactation. the data reported herein is a summary of five trials, two of which were reported previously (A.S. …

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Dried Brewers Grains As An Ingredient In Gestation Diets For Swine, Richard W. Wahlstrom, George W. Libal Nov 1974

Dried Brewers Grains As An Ingredient In Gestation Diets For Swine, Richard W. Wahlstrom, George W. Libal

South Dakota Swine Field Day Proceedings and Research Reports, 1974

There are a number of cereal grain by-products that are used as feed ingredients in livestock diets. Dried Brewers Grains is a by-product that has not been used to any extent in swine diets because of its relatively high fiber content and lack of palatability. This product contains about 26% protein and, when other sources of protein increased in price, it was an economical source of protein. The two experiments reported here were conducted to determine the value of dried brewers grains as an ingredient in diets for gestating swine.

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Zinc Supplementation Of Swine Diets, George W. Libal, Richard C. Wahlstrom Nov 1974

Zinc Supplementation Of Swine Diets, George W. Libal, Richard C. Wahlstrom

South Dakota Swine Field Day Proceedings and Research Reports, 1974

The objectives of this experiment was to determine if a zinc proteinate (organic zinc methionine) is of value to pigs when added to diets that contain zinc in the form of trace mineral salt.

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Age Of Breeding And Reproductive Performance Of Gilts, George W. Libal, Richard W. Wahlstrom Nov 1974

Age Of Breeding And Reproductive Performance Of Gilts, George W. Libal, Richard W. Wahlstrom

South Dakota Swine Field Day Proceedings and Research Reports, 1974

At a time when pigs reach market weight at 5 to 6 months of age, when continuous farrowing allowing gilts to fit into the farrowing program any time of the year is more popular and when feed costs are very high for the 2 to 3 months of unproductive time while the gilt is reaching 8 months of age, it is time to reevaluate our recommendation of age at which gilts should be bred. The following data are from an initial experiment designed to compare reproductive performance of gilts bred at 6 months of age (approximately first estrus) with gilts …

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Eighteenth Annual Swine Day, Animal Science Department Nov 1974

Eighteenth Annual Swine Day, Animal Science Department

South Dakota Swine Field Day Proceedings and Research Reports, 1974

These are the complete proceedings of the eighteenth annual South Dakota Swine Field Day held on November 21, 1974 at South Dakota State University.

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The Effect Of Lysine Supplementation Of Diets For Growing-Finishing Pigs, Richard C. Wahlstrom, George W. Libal Nov 1974

The Effect Of Lysine Supplementation Of Diets For Growing-Finishing Pigs, Richard C. Wahlstrom, George W. Libal

South Dakota Swine Field Day Proceedings and Research Reports, 1974

The objectives of this experiment were to obtain additional information on the effects of supplementary lysine in swine growing deits of 12 or 14% protein and finishing diets of 10 or 12% protein on daily gains, feed efficiency and carcass development.

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Blood Meal As An Ingredient In Diets For Growing-Finishing Pigs, Richard W. Wahlstrom, George W. Libal, Steve L. Robbins Nov 1974

Blood Meal As An Ingredient In Diets For Growing-Finishing Pigs, Richard W. Wahlstrom, George W. Libal, Steve L. Robbins

South Dakota Swine Field Day Proceedings and Research Reports, 1974

The present experiment was conducted to obtain further information on the value of blood meal as a partial substitute for soybean meal in diets for growing pigs and to study the availability of lysine in blood meal.

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Supplementation Of Opaque-2 And Normal Corn With Lysine And Tryptophan For Finishing Swine, John G. Volz, Richard C. Wahlstrom, George W. Libal Nov 1974

Supplementation Of Opaque-2 And Normal Corn With Lysine And Tryptophan For Finishing Swine, John G. Volz, Richard C. Wahlstrom, George W. Libal

South Dakota Swine Field Day Proceedings and Research Reports, 1974

The objective of this experiment was to evaluate the adequacy of normal and opaque-2 corn as sources of lysine and tryptophan for finishing swine. The criteria used to measure the value of these two amino acids were growth performance and carcass data.

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Outlook For U.S. Farm Exports Down After Record $21.3 Billion In Fiscal Year 1974, William F. Payne Nov 1974

Outlook For U.S. Farm Exports Down After Record $21.3 Billion In Fiscal Year 1974, William F. Payne

Economics Commentator (1972- 2016)

No abstract provided.

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